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Mila [183]
3 years ago
12

Atomic weight of lithium ?

Chemistry
1 answer:
LuckyWell [14K]3 years ago
5 0

Answer:

6.941

Explanation:

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What volume of 18.0 m sulfuric acid is required to prepare 16.5 l of 0.126 m h2so4?
Blababa [14]

this is a dilution question where a certain volume is taken from a more concentrated solution and diluted to make a solution with a lower concentration.

the dilution forumla is as follows

c1v1 = c2v2

where c1 is concentration and v1 is volume of the more concetrated solution

c2 is concentration and v2 is volume of the diluted solution

substituting the values in the equation

18.0 M x V = 0.126 M x 16.5 L

V = 0.1155 L

volume of 115.5 mL is taken from the 18.0 M solution and diluted upto 16.5 L solution.

6 0
3 years ago
What would the hydroxide ion concentration be if the hydrogen ion concentration was 1 x 10-3 M?
Sonbull [250]

Answer:

1 x 10⁻¹¹ M

Explanation:

<u>(Step 1)</u>

Determine the pH.

pH = -log[H⁺]

pH = -log[1 x 10⁻³ M]

pH = 3

<u>(Step 2)</u>

Determine the pOH.

pH + pOH = 14

3 + pOH = 14

pOH = 11

<u>(Step 3)</u>

Determine the hydroxide (OH⁻) concentration.

[OH⁻] = 10^-pOH

[OH⁻] = 10⁻¹¹

[OH⁻] = 1 x 10⁻¹¹ M

3 0
1 year ago
What is a definition of a Balanced Equation
Lisa [10]

Answer: A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products

8 0
3 years ago
Which has a higher frequency a neutron or electron
guajiro [1.7K]
Neutron or neutral and electran are positive
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3 years ago
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Lena [83]

Answer:

v

Explanation:

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